13971147317 has 4 divisors (see below), whose sum is σ = 14706470880. Its totient is φ = 13235823756.

The previous prime is 13971147277. The next prime is 13971147319. The reversal of 13971147317 is 71374117931.

13971147317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13971147317 - 2²⁰ = 13970098741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13971147319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367661753 + ... + 367661790.

It is an arithmetic number, because the mean of its divisors is an integer number (3676617720).

Almost surely, 2^13971147317 is an apocalyptic number.

It is an amenable number.

13971147317 is a deficient number, since it is larger than the sum of its proper divisors (735323563).

13971147317 is an equidigital number, since it uses as much as digits as its factorization.

13971147317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735323562.

The product of its digits is 111132, while the sum is 44.

The spelling of 13971147317 in words is "thirteen billion, nine hundred seventy-one million, one hundred forty-seven thousand, three hundred seventeen".